Code :

Code: UC-02
Description: CPT-ASIC trouble
Causes: 1) CPT-ASIC abnormality 2) SCU PWB abnormality
Remedy: Turn OFF/ON the power several times. If the trouble still occurs, replace the SCU PWB or the CPT-ASIC.

Code: UC-20
Description: Document control module trouble
Causes: Communication error between SCU and DOCC Communication line test error when turning on the power or after canceling an exclusion simulation.
Remedy: Case 1 Cause Connector or harness connection error or disconnection Check and remedy Check the connector and harness in the communication line. Case 2 Cause Control (SCU) PWB trouble. DOCC PWB trouble. Check and remedy Replace the SCU PWB or the DOCC PWB. Case 3 Cause Malfunction due to electrical noises. Check and remedy Turn OFF/ON the power to electrical cancel the trouble.

Code: UC-21
Description: DOCC (Document Control) PWB not-detected (DSK model only)
Causes: When the data security kit ROM (BOOT, PROG1, 2) is installed, the DOCC PWB is not detected.
Remedy: Case 1 Cause Connector or harness connection error or disconnection Check and remedy Check the connector and harness in the communication line. Case 2 Cause Control (SCU) PWB trouble. DOCC PWB trouble. Check and remedy Replace the SCU PWB or the DOCC PWB. Case 3 Cause DOCC PWB not-installed Check and remedy Install the DOCC PWB.